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Terms in this set (42)
in the living organism
in glass - outside the living organism
in its own situation
gamete producing organ
What is the male gonad?
What is the female gonad?
sex cell or a germ cell
What is the male gamete?
What is the female gamete?
gamete + gamete = ?
zygote 1N + 1N = ?
What is zygote (2N)?
- fertilized egg
- conceived individual
- new human being
cell division without growth periods between divisions
________________ divides the zygote into 64 compartments without increasing the size of the Gastrula
- each of these cells is totipotent before differentiation
Each cell has an exact copy of the nucleus of the original cell - the zygote
Each cell has the same set of genes as the zygote
Not all of the genes are required to perform the function assigned to a cell
Functions are now assigned to the cell
Specialization - division of labor are synonyms
The genes not necessary to perform the function assigned to this specific cell type are turned off - only the genes necessary for the function assigned to this specific cell are left on to function
What is the analogy for differentiation?
Parental block on TV channels - still there but can operate
used for Growth, maintenance, repair for the rest of the organism's life
TRUE OR FALSE
The nucleus of every cell in your body is a copy of the nucleus of the first cell of your body
guarantees that each nucleus is a copy
mitosis (nuclear division
It does not guarantee that the cytoplasm of the new cells are the same
TRUE OR FALSE
Every cell in your body is not the same - it's form changes with its assigned function
Function is designed at ...
The cytoplasm of the zygote is the _____________
From fertilization to differentiation - each cell is considered to be a ____________________________________ - each cell could make a whole individual
Totipotent Stem Cell
What is established at differentiation?
Three Germ layers
What are the three germ layers?
rapid growth of cells --> rolling over the edge
growth of cells inward
** rug folding down
Growth of cells outward
** rug foling upward
What are the four tissue types?
each cell is a ______________ for whatever type of cell it was determined to be
Differentiated cells of the same kind make up a tissue -except for nervous tissue - each tissue...
have one and only one kind of cell
"take care" of the principle nerve cell - the NEURON - which is too busy transmitting impulses to be
concerned with feeding itself...
the study of tissues
tissue is grown in vitro (on slants in glass bottles) as it is supplied with the
requirements for division (O 2 , H 2 O, Nutrients, Temp, Atmospheric Pressure)
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